(!!) (BEST PAIR) 12JN6 GE NOS 1970 era (74ma and 73ma)

1 matched pair) 12JN6 GE NOS 1970 era

1 tube) 74ma Gm=7400

1 tube) 73ma Gm=7700

Vplate=250V

Vscreen = 150V

Vgrid=-22.5V

Good Iplate = 60-65ma+

Good Gm = 6800-7300+

– linear amp